CN106516413A - Damage-preventing method for large-diameter threaded workpiece - Google Patents
Damage-preventing method for large-diameter threaded workpiece Download PDFInfo
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- CN106516413A CN106516413A CN201510573216.1A CN201510573216A CN106516413A CN 106516413 A CN106516413 A CN 106516413A CN 201510573216 A CN201510573216 A CN 201510573216A CN 106516413 A CN106516413 A CN 106516413A
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Abstract
The invention discloses a damage-preventing method for a large-diameter threaded workpiece. According to the damage-preventing method for the large-diameter threaded workpiece, a shield body is included, the shield body is composed of a top face (1) and a side wall (2) and is integrally in a circular truncated cone shape, the inner portion of the shield body is of a cavity structure, the side wall (2) is provided with internal threads matched with external threads of the workpiece, the top face (1) of the shield body is provided with at least two hollowed-out areas (5) penetrating through the top face (1), and the portion, between the hollowed-out areas (5), of the top face (1) is a twisting arm (6). By the adoption of the damage-preventing method for the large-diameter threaded workpiece, the radial and axial deformation of the threads can be effectively reduced, and it is avoided that the threads are damaged because of the collision; a stacking ring facilitates transportation and storage of the shield body; stacking platforms can keep the distance of the stacking rings of the shield bodies, and a tool or the hand can conveniently extend into the space between the shield bodies; the twisting arm between the hollowed-out areas facilitates disassembly of the shield bodies and are used as oil filling holes at the same time, and therefore long-term storage, transportation and maintenance of the workpiece are facilitated.
Description
Technical field
The present invention relates to the workpiece fence after a kind of steel processing, specifically refers to a kind of antisitic defect method of large-diameter thread workpiece.
Background technology
In the middle of the parts of petroleum machinery, particularly in subsurface tool, most of workpiece is cylindrical on the whole, such as helicoid hydraulic motor, drilling jar, super bumper jar, normal core-extracting tool, hydraulic accelerator, fishing cup, strong magnetic die, fishing tap, box tap, reacting cycle is salvaged blue, returnable slip overshot, lifting sub, monoblock type short drill pipe, kelly cock, sword-like back-pressure valve, drilling tool stabilizer etc., above workpiece is made by machining using forging blank, the two ends of its shaping workpiece or wherein one end have internal thread or external screw thread.Wherein helicoid hydraulic motor is one kind with drilling fluid as power, liquid pressure energy is switched to the positive displacement mud motor of mechanical energy, enter section's motor when the mud that slush pump is pumped out flows through by-passing valve, certain pressure differential is formed in the import and export of motor, drive rotor is rotated around the axis of stator, and rotating speed and moment of torsion are passed to into drill bit by universal drive shaft and power transmission shaft, so as to realize drillng operation；Lifting sub is a kind of instrument for removing drill collar, and it is a short drill pipe, is connected on the screw thread of drill collar to be made a trip with elevator for removing during drill collar；For the overall dimensions of workpiece; the externally threaded thickness at its two ends, externally threaded width are less; therefore; in the maintenance after Workpiece shaping with transportation, it is required to carefully protect the external screw thread of workpiece, is damaged with the external screw thread for preventing the collision because of workpiece from bringing; once the thread damage of workpiece; sealing property will be caused to reduce, or even workpiece can not be used, and cause to scrap.
The content of the invention
It is an object of the invention to overcome the difficult problem that the external screw thread of cylindric workpiece workpiece after machining of current petroleum machinery is easily damaged in transport and storing process, there is provided a kind of protective cover of easy-to-dismount external thread petroleum machinery workpiece.
The purpose of the present invention is achieved through the following technical solutions：
A kind of antisitic defect method of large-diameter thread workpiece, including shield body, described shield body is made up of top surface and side wall, and it is overall in round table-like, it is cavity structure which is internal, in side, the inner surface setting of wall has the internal thread that the external screw thread with workpiece matches, shield body top surface at least provided with two vacancy sections through top surface, the top surface between vacancy section is torque arm.Shield body is formed by connecting by top surface and side wall, top surface is circle, side wall connects and composes round table-like, top surface is arranged on top side wall, the internal thread matched with the external screw thread of workpiece is provided with the wall of side, during use, shield body is placed on into workpiece end, and rotate shield body, the screw thread of shield body is coordinated with the screw thread of workpiece, after the screw thread of workpiece is all included in vivo by shield body, in the thread pitch of the embedded surface of the work of the screw thread of shield body, effectively can reduce screw thread radial direction and axial direction on deformation, prevent the thread damage which occurs because of collision；For the ease of the dismounting of shield body, shield body top surface at least provided with two vacancy sections through top surface, summit portion between vacancy section forms torque arm, during use, hand is inserted at least two vacancy sections simultaneously, and the torque arm between vacancy section is turned, torque arm drives shield body to rotate the dismounting for being capable of achieving shield body.
The vacancy section is four, and is uniformly distributed in the top surface of shield body, and the torque arm is mutually perpendicular to and connects formation entirety.Four void regions are evenly distributed on the top surface of shield body, and symmetrical with regard to end face center, and the torque arm between four void regions forms " ten " font in overlook direction, thus, being both easy to twisting, also prevent take up more spatial volumes.
Described sidewall bottom is connected with the stacking ring parallel with the top surface of shield body.As shield body is in round table-like, occupy certain spatial volume, for the ease of the transport and storage of shield body, in shield body side, the bottom of wall is provided with stacking ring, the internal diameter of stacking ring is matched with the diameter of shield body sidewall bottom, stacking ring it is parallel with the top surface of shield body.
At least provided with two piling beds on the stacking ring, the piling bed is evenly distributed on the upper surface of stacking ring.When shield body is stacked, shield body can be compressed by the gravity of its own, cause the taking-up of shield body difficult, in order to overcome the difficulty for being difficult to take out, piling bed is provided with stacking ring, piling bed can keep the distance between stacking ring of shield body, be easy to instrument or hand to stretch between shield body, reached with this and be easy to separate purpose.
Workpiece is molded on the equipment of changing to from making and uses, need through long time, the particularly coupling part of workpiece, it is exposed in the middle of air for a long time and is got rusty easily, corrosion etc., therefore need to coat machine oil to protect workpiece in surface of the work, but, machine oil easily slides, it is difficult long-time and is attached to labor cost surface, therefore, after shield body is placed on surface of the work, rotate a circle to after two weeks, machine oil is added into void region, then it is further continued for rotating shield body, until the external screw thread of workpiece fully enters the cavity in shield body, in rotary course, machine oil is coated on the surface of workpiece screw thread with the cooperation of screw thread.
The present invention compared with prior art, has the following advantages and advantages：
A kind of antisitic defect method of large-diameter thread workpiece of 1 present invention, shield body is on the whole in round table-like, internal thread is internally provided with which, in the thread pitch of the embedded surface of the work of the screw thread of shield body, effectively can reduce screw thread radial direction and axial direction on deformation, prevent the thread damage which occurs because of collision；
A kind of antisitic defect method of large-diameter thread workpiece of 2 present invention, in shield body side, the bottom of wall is provided with stacking ring, is easy to the transport and storage of shield body；
A kind of antisitic defect method of large-diameter thread workpiece of 3 present invention, piling bed is provided with stacking ring, piling bed can keep the distance between stacking ring of shield body, be easy to instrument or hand to stretch between shield body, reached with this and be easy to separate purpose；
A kind of antisitic defect method of large-diameter thread workpiece of 4 present invention, is provided with void region in top surface, and the torque arm between void region is easy to the dismounting of shield body, void region also simultaneously as oil filler point, to be conducive to longer-term storage and transport, the maintenance of workpiece.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Mark and corresponding parts title in accompanying drawing：
1- top surfaces, 2- sides wall, 3- stacking rings, 4- piling beds, 5- vacancy sections, 6- torque arm.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment
As shown in Figure 1, the protective cover of the easy-to-dismount external thread petroleum machinery workpiece of the present invention, including shield body, shield body is made up of top surface 1 and side wall 2, and which generally lacks the round table-like of bottom surface, in shield body side, the inner surface setting of wall has screw thread, the screw thread is matched with the external screw thread of workpiece end, is provided with four void regions 5 on top surface 1, and top surface 1 is run through in void region 5, and with regard to the Central Symmetry of top surface 1,1 part of top surface between void region 5 is torque arm 6；In side, the lower end of wall is connected with the stacking ring 3 parallel with top surface 1, stacking ring 3 is annular in shape, its internal diameter is matched with the diameter of shield body bottom, and the upper surface of stacking ring 3 is provided with three piling beds 4 for protruding from stacking ring 3, and three piling beds 4 are evenly distributed on stacking ring 3.
As described above, the present invention just can be realized well.
Claims (4)
1. a kind of antisitic defect method of large-diameter thread workpiece, it is characterised in that：Including shield body, described shield body is by top surface（1）With side wall（2）Constitute, and entirety is in round table-like, it is cavity structure which is internal, in side wall（2）Inner surface setting have the internal thread that the external screw thread with workpiece matches, in the top surface of shield body（1）At least provided with two through top surface（1）Vacancy section（5）, vacancy section（5）Between top surface（1）For torque arm（6）；Shield body top surface at least provided with two vacancy sections through top surface, summit portion between vacancy section forms torque arm, during use, hand is inserted at least two vacancy sections simultaneously, and the torque arm between vacancy section is turned, torque arm drives shield body to rotate the dismounting for being capable of achieving shield body.
2. the antisitic defect method of a kind of large-diameter thread workpiece according to claim 1, it is characterised in that：The vacancy section（5）For four, and it is uniformly distributed in the top surface of shield body（1）, the torque arm（6）It is mutually perpendicular to and connects formation overall.
3. the antisitic defect method of a kind of large-diameter thread workpiece according to claim 1 and 2, it is characterised in that：Described side wall（2）Bottom is connected with the top surface with shield body（1）Parallel stacking ring（3）.
4. the external thread petroleum machinery workpiece protective cover being easily installed according to claim 3, it is characterised in that：In the stacking ring（3）On at least provided with two piling beds（4）, the piling bed（4）It is evenly distributed on stacking ring（3）Upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510573216.1A CN106516413A (en) | 2015-09-10 | 2015-09-10 | Damage-preventing method for large-diameter threaded workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510573216.1A CN106516413A (en) | 2015-09-10 | 2015-09-10 | Damage-preventing method for large-diameter threaded workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106516413A true CN106516413A (en) | 2017-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510573216.1A Pending CN106516413A (en) | 2015-09-10 | 2015-09-10 | Damage-preventing method for large-diameter threaded workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106516413A (en) |
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2015
- 2015-09-10 CN CN201510573216.1A patent/CN106516413A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |